What is a Swift Class We recently wrote aboutSwift structs. In this tutorial, we’ll look at classes. Classes and structures have a lot in common, although there are some important differences. Let’s take a look at what a class is and what you use them for. A class is initialised as...
By learning about the key path, you open up yourself to an opportunity to improve your existing API or even create a new one that you don't aware you can do it.
What is The Protocol in Swift? A protocol acts as a tool to combine properties and methods into a single entity so that other objects can conform to this protocol to delegate tasks. We can implement the properties and functions of protocols that can be provided by a class, structure, or ...
teaser.body.wrappedValue = "What is property Wrapper in Swift" // 3print(teaser.body.wrappedValue)// What is pr...<1> Need to wrap our property with a wrapper to get the truncate function. <2> Reading it needs to access the nested computed property, wrappedValue. <3> Changing it also...
The first argument is the duration of the animation and the second argument is a closure. Passing a closure as the second argument of the animate(withDuration:animations:) method is only possible because functions are first-class citizens in Swift. If this sounds confusing, then remember that cl...
Swift 4 Xcode 9 iOS 11 The singleton pattern is a widely used design pattern in software development. Despite its popularity, it's often considered an anti-pattern. Why is that? In this episode, I explain what the singleton pattern entails and how to create singletons in Swift. ...
a forward declaration is an identifier declaration (such as a class, function, or variable) to inform the compiler about its existence before it is defined. this allows you to use the identifier in situations where the order of declaration matters. can i declare a constant pointer in c? yes...
Because functions are first-class types in Swift, the last two lines are able to create a reference to the goToMaximumWarp() method called enterWarp, then call that later on whenever we want to. The problem is, you can't do the same thing for properties – you can't say "create a ...
A Sendable type is one that can be safely passed around in a concurrent environment, which can include value types such as structs, final classes with constant properties, actors that automatically protect their own mutable state, and more. Before Swift 6 the compiler was very strict: if ...
Although Swift 6 is looming on the horizon, the 5.x releases still have a lot to give – simpler ways to use if and switch, macros, noncopyable types, custom actor executors, and more are all coming in Swift 5.9, making yet another mammoth release. In this article I’ll walk you ...